Fuel is not traveling between tanks

Your tank vents could be plugged.
Or a cracked pickup tube.
Or something blocking the pickup tube.
Splitter valve could be plugged.
Loosen a fuel cap and listen for pressure buildup.
Do the tanks equalize after sitting for a while?

 

Vents in caps - shut off valve in crossover line.

$1,000?

Bring it to me and we’ll figure it out over a 30 pack.

 

Year, make and model would be helpful

 

Disconnect driver side lines from splitter and blow them with the air gun . Fixed it for me , since February . Exactly the same ...i checked breathers and splitter first

 

Put one of these in your tool box

 

As a temporary fix open fuel cap slightly this will break the vacuum. Fuel should equalize the tanks

 

Run from that guy. He's trying to hose you IMO.

 

It's 1 of 2 things

#1 The vent tube is blocked on the drivers side.... to check fell the drivers side full and passanger side 1/2 or less, park the truck turn the truck off and crack both caps a little. Check the level about 1hr later, they should be the same... if so take off the vent tube and blow it out or replace it.. if not #2

#2 you have a blocked fuel pickup or block fuel line. To check disconnect THAT fuel line as far away fron the fuel tank as posable and blow it out until air is blowing into the tank. 2 or 3 times then hook it back up and see it they equalize.. if so that was your problem.... now if #2 fixed it you need to check your tank... (you can get a cheap endoscope "bore scope") for under $100. You need to see if there is any junk in your tank...... an old way to F someone you didn't like is to throw a pice of plastic bag in someone tank... it will float around forever until it gets sucked into the fuel line. If you just blow it out it will do it again...

 

You could probably replace both tanks, and everything in between them for that much money. Jesus.